This module implements a hierarchical data structure for BLAST results.

BLAST is a tool for searching in (biological) sequences for
similarity. This library is tested against NCBI-blast version
2.2.14. There exist several independent versions of BLAST, so expect some
incompatbilities if you're using a different BLAST version.

For parsing BLAST results, the XML format (blastall -m 7) is by far the most
robust choice, and is implemented in the Bio.Alignment.BlastXML module.